CN1212936C - Image correcting method for ink jef record mode - Google Patents
Image correcting method for ink jef record mode Download PDFInfo
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- CN1212936C CN1212936C CNB021470715A CN02147071A CN1212936C CN 1212936 C CN1212936 C CN 1212936C CN B021470715 A CNB021470715 A CN B021470715A CN 02147071 A CN02147071 A CN 02147071A CN 1212936 C CN1212936 C CN 1212936C
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/21—Ink jet for multi-colour printing
- B41J2/2132—Print quality control characterised by dot disposition, e.g. for reducing white stripes or banding
- B41J2/2139—Compensation for malfunctioning nozzles creating dot place or dot size errors
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- Engineering & Computer Science (AREA)
- Quality & Reliability (AREA)
- Ink Jet (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
- Color, Gradation (AREA)
Abstract
The present invention relates to a method for correcting image degradations due to nonejecting nozzles or kink ejection of nozzles without reducing a recording rate for an inkjet recording apparatus for recording images at high speed employing a one-pass recording system, in which an image is completed by one time scanning of a recording head relative to a recording medium, such as an inkjet recording apparatus using a full-line type recording head. When corrected data during head shading correction and nonejection complementing in image processing exceed a maximum value capable of being recorded, complementing is controlled with a different color corresponding to data-amount which exceeds the maximum value.
Description
Technical field
The present invention relates on recording medium, forming ink dot by spraying ink, ink dot forms in the ink jet recording method of image thus, to inhomogeneous and landing positions skew as the spray volume of the intrinsic characteristic of each record head, and then because of the method that image deflects that reason causes are revised such as not spraying.
Background technology
Along with information processing apparatus such as copy device, word processor, computers, also have popularizing of communicating machine, one of install as the image formation (record) of these machines, the record head of employing ink-jetting style carries out digital image recording and popularizes just rapidly.In addition, follow high-quality, the colorize of the visual information of above-mentioned information machine and communicating machine, in tape deck, the demand of high image quality, colorize is also different to be increased.
In such tape deck, in order to make pixel miniaturization and high speed etc., as integrated be arranged with the record head that a plurality of recording elements form (below, also be called multiple print head), use is with the record head on integrated a plurality of inkjet mouths of high density and liquid road, and then, generally be that the various inks with cyan, magenta, yellow, black possess a plurality of above-mentioned multiple print heads accordingly for colorize.By this formation, how exporting high quality image quickly and safely is a direction of technological progress.And then, for seeking more speed, the length of above-mentioned multiple print head as pagewidth, is also being moved towards practicability in the method for single pass high speed ground output.
But, for example considering that the length of its multiple print head is about 30cm under the situation of the page printer of the horizontal paper feeding of A4 paper, in converting, 600dpi needs the nozzle more than 7000.Zero defect ground is made and is comprised multi-jet multiple print head like this, sees it is very difficult from the angle of yield rate.In addition, nozzle number is so many, and all the performance of nozzle is identical.And then the possibility of nozzle that occurs not ink-jet in the middle of using is very big.Thereby, revise because the depth of nozzle spray volume is uneven and the printhead Rendering Process correction technique of the concentration depth inequality that the skew of landing positions produces, with injection nozzle is not compensated processing, even be not that the also operable not injection nozzle of flawless multiple print head correction (not spraying compensation) technology receives publicity.
As printhead Rendering Process method, generally be that each nozzle is measured its concentration, its result of feedback in input image data.For example, when certain shower nozzle is few because of certain reason spray volume, under the situation of this part concentration step-down,, make in output image, to become uniform image concentration by as the gray value of increase and this nozzle counterpart in the input picture, revising.
Summary of the invention
As the method for not spraying compensation, present inventors have proposed method shown below.For example, have under the situation that certain shower nozzle in cyan do not spray, the point that should spray this nozzle is replaced into the method that the nozzle in its both sides sprays, the method (adjacent compensation) of giving the nozzle at its two ends with handle and data allocations that injection nozzle is not corresponding, also have, on the part corresponding, with the method (heterochromatic correction) of the inkspot correction data of other colors such as black with the not injection nozzle of cyan.
Above-mentioned printhead Rendering Process and do not spray compensation is the effective ways that recording image quality is improved, but in above-mentioned printhead Rendering Process method with do not spray in the compensation method problem of known generation the following stated.
For example, under the situation of the few concentration step-down of quantity of ink of a part of nozzle ejection of record head, usually, be the gray value that improves this part, its result is by so revising, can be with record (Rendering Process) under the isoconcentration.But, be 100% in logger task, perhaps, in approaching with it zone, even improve the gray value of the few part of spray volume, its surplus is still not enough.Therefore, the correction of this part is incomplete.
In addition, similarly, even using the adjacent nozzle correction not in the adjacent compensation of injection nozzle, because, when the logger task with the part that injection nozzle is not adjacent is 100%, perhaps, under the situation approaching with it, can not increase above-mentioned concentration to adjacent nozzle, so, be inadequate to the correction of injection nozzle.
In order to address this is that, as to one of modification method of injection nozzle not, present inventors propose such method, promptly, use and the different color of color of injection nozzle not, for example, as luminance difference with use different record heads to revise aberration is as far as possible little, and the Rendering Process at moment is arranged, do not show countermeasure.
In addition, as another solution, by strengthening record head in fact relative to main scanning direction (under the situation that the fixed recording head recording medium moves, towards moving direction) resolution (packing density), can be at the record more than 100% that reaches on the recording medium in the past, thereby can in whole gray areas, carry out the correction of gray value.But in this method, the data volume of giving record head increases, and has the tendency of the writing speed decline of each page.And then, for the record that increases per unit area is counted, if the speed of holding the record just needs further to improve injection frequency.On the other hand, injection frequency is all roughly using on the upper limit usually, thereby it is inevitable that the writing speed of each page descends.
The objective of the invention is to, under the prerequisite that the writing speed that does not make each page descends, carry out Rendering Process correction and not injection nozzle correction effectively.
The present invention is exactly to propose for achieving the above object, and its method is, when the data through revising surpass the defined value when printing a Rendering Process correction and do not spray compensation, to surpassing its peaked data volume different colours correction.
Detailed saying is, it is a kind of image correcting method, it is to have disposed the record head that sprays a plurality of nozzles of ink in use, by the image correcting method in the ink-jet recording apparatus that on recording medium, sprays the ink-mist recording image, comprise, with reference to the correction step of the even relevant recording characteristic information correction image of the not injection nozzle of employed record head and record density unevenness, it is characterized in that: the step of above-mentioned correction image is made up of following steps: the same colour correction step of using the record head same with becoming the record head of revising object to revise; Heterochromatic correction step and the above-mentioned heterochromatic correction step of using the record head different to revise with revising object, when surpassing setting with the revised data of colour correction step, with its amount that surpasses different color correct accordingly.
In addition, the value of so-called regulation is, the maximum that can write down as data.
The summary of feature of the present invention is, when control surpasses the maximum that can write down when the data of revising when printing a Rendering Process correction and do not spray compensation, to surpassing this peaked data volume different colours correction.
Detailed saying is, in printhead Rendering Process correcting process with not in the injection nozzle correcting process, handle as prime, use is carried out correcting process (same colour correction) as the printhead of object, handle as the back level, use printhead to carry out correcting process (heterochromatic correction) as the different colours beyond the printhead of object.
The same colour correction that so-called above-mentioned prime is handled for example, is the processing that 8 view data is increased, distributes its data according to Rendering Process information and non-ejection information.So-called Rendering Process information is the index of concentration in the zone of expression and each nozzle correspondence, according to the view data (correction of leading portion Rendering Process) of this desired value increase and decrease input.Have as concrete method, for example, according to Rendering Process information, determine the coefficient in each nozzle, this coefficient and view data long-pending as the method for revising data with use the method for the concentration map table increase and decrease of Rendering Process information setting etc., but do not done special restriction.Making the view data increase and decrease to reduce the conventional method of concentration depth inequality according to Rendering Process information, is normally used method.
And then when making the data increase and decrease, setting the corresponding Cmax data volume that can write down usually is the upper limit, but in the Rendering Process correcting process of handling as prime of the present invention, particularly this point can not considered.Its reason is, according to the amount that surpasses this upper limit, and the cause of in level processing section, back, revising.
On the other hand, what is called is injection nozzle information not, is the information that expression can not spray ink from which nozzle.Based on this information, to not spraying injection nozzle correction, and specific practice is, by handle and the not corresponding correction data allocations of injection nozzle part carry out for the nozzle segment that can spray ink (the not injection nozzle correction of prime processing) of its both sides.As this distribution method, handlebar not each of view data of injection nozzle part 1/2 is added in the method that is equivalent on the pixel on two side nozzles, with the view data of reference with the pixel of two side nozzles, distribute the method for the view data of injection nozzle part not etc. according to the surplus capacity in these pixels, not special the qualification until the higher limit of the view data that can write down.But, main points in the not injection nozzle correction that prime of the present invention is handled are, when distributing the data of injection nozzle not in both sides, under the situation of view data above the higher limit of the view data that can write down of the pixel that will distribute, do not carry out the data allocations that surpasses higher limit of the view data that can write down, the data volume that can not distribute is stayed not in the injection nozzle part.This point is the different part of processing with above-mentioned leading portion Rendering Process correction.Also have, the higher limit of the view data that can write down of injection nozzle part is not " 0 ",, must be noted that the situation that what kind of record is all not all right that is.
In addition, the so-called heterochromatic correction that above-mentioned back level is handled, be among the result of the homochromy correcting process in the same printhead that leading portion carries out, when this view data of generation surpasses the pixel of the higher limit that can write down, utilize of the processing of different printheads with different color correct.Become the relation between the color of the color of object and correction, though there is no particular limitation,, be desirable naturally with the approaching color correct restriction of form and aspect as far as possible.For example, as correction to cyan, if C, M, Y, the 4 look printers of K then utilize the black ideal.In addition, if C, M, Y, K, LC, the 6 look printers of LM then utilize LC (shallow magenta: the magenta that concentration is low) better.In addition,, use C for black, M, the processing black correction of Y also can.
On the other hand, for yellow, because yellow intrinsic brightness is quite high, so in different colors, be not modified to.This judgement is that the entire system of printer is carried out, and has no particular limits.In addition, the amount of the color of correction is according to becoming the amount decision that the object pixels view data surpasses the higher limit that may write down.Surpass the relation (heterochromatic compensation meter) of amount of the color of the amount of this higher limit and correction, for example can preestablish the heterochromatic correcting process of carrying out of using this table can adopt the back level to handle as shown in Figure 5.In the color and revised color of the correction object of in this heterochromatic compensation meter, setting, aberration is more satisfactory for " 0 ", but, in the printer system of 4 looks and 6 looks, be impossible in practice, ideal state is to use heterochromatic compensation meter that reduces aberration as far as possible and the heterochromatic compensation meter that reduces luminance difference.
Like this, in heterochromatic part, because can not distinguish correction of printhead Rendering Process or not injection nozzle correction and handling in the lump, so also help simplification, the high speed of treatment circuit.
In addition, above-mentioned Rendering Process information and injection nozzle information not, being not particularly limited is the information that obtains constantly at which.For example, also can measure the characteristic of printhead in the stage that goes out record head from plant produced, remain in holder of being installed on the record head etc., reading these data revises, in addition, also resolution chart be can from printer, export at any time, this Rendering Process information of renewal and injection nozzle information not in scanner etc., read.And then, be used for Rendering Process information and not a series of actions of injection nozzle information updating, also can use the printer that scanner is housed in inside to carry out automatically, do not do special qualification.But the state of record head is along with the variation of time is very possible, from this viewpoint, wishes it is according to necessity print system that may upgrade of injection nozzle information and Rendering Process information not at least.
Description of drawings
Fig. 1 is the calcspar of the flow process of the data processing among the expression embodiment.
Fig. 2 is that expression obtains the not resolution chart of injection nozzle and Rendering Process information.
Fig. 3 is the curve map of the cyan CONCENTRATION DISTRIBUTION among the expression embodiment.
Fig. 4 is the curve map that is illustrated in the relation of data volume in each color and its brightness.
Fig. 5 is the curve map that the data volume of color data amount and the color of correction of the object that should revise of expression concerns.
Fig. 6 illustrates the flow chart of the correcting process among the embodiment.
The specific embodiment
Following with reference to the drawing detailed description embodiment of the invention.
In the present embodiment, use the hot ink jet print head output gray level of side shooter (side-shooter) type image.The resolution of this record head (spray nozzle density) is 600dpi, the about 8pl of its emitted dose, and its nozzle number is 6912 nozzles, has the length of about 293mm.Trial-production possesses the multiple print head that cyan C, magenta M, yellow Y, black K amount to 4 kinds of these length and carries out image output.The output image resolution is 600 * 600dpi, is the formula record that recording medium is passed through for fixing printing head.
Each ink of employed CMYK by adjusting various additives, makes its physical parameter and viscosity 1.8cps, and surface tension 39dyn/cm in addition, as the drive condition of printhead, is frequency 8kHz, voltage 10V, applies pulse width 0.8 μ s about equally.Drive by this, the ink droplet of about 8pl is with the speed ejection of about 15m/s.
Fig. 1, the figure of the process that the data in the expression present embodiment are handled is among the figure, 1 for colour switching portion, be RGB respectively input image data colour switching of 8 be the part of the view data of 8 in CMYK4 kind color, in addition, processing such as can carry out that conversion and expansion are dwindled as required.
Among the figure, the 2nd, specialize correcting process part of the present invention, with Rendering Process information and not injection nozzle information be that correcting process is carried out on the basis.This correcting process portion 2, by forming as the homochromy correction portion of leading portion 21 with as the heterochromatic correction portion of back segment 22, in the homochromy correcting process of leading portion needed Rendering Process information and not injection nozzle information be kept at 23 print head information storage part.
In addition, needed heterochromatic compensation meter is kept in 24 the table storage part in the heterochromatic correcting process of back segment.3 is the print head information handling part, reads as required the resolution chart of output, handles these data and makes Rendering Process information and injection nozzle information not, the print head information storage part internal information of renewal 23.4 is image processing part, carries out the processing of 2 values etc. here.These data bitmaps are transported to 5 driving device of printer head, according to this data-driven printhead output image.
When output image, at first, export resolution chart as shown in Figure 2, in 3 print head information handling part, handle the print head information of the header storage part inside of renewal 23.Resolution chart used herein is made up of not injection nozzle check pattern 100 and Rendering Process pattern 101, and this figure exports each color.The injection nozzle check pattern 100, are 16 sections with the line of the length of 64 pixels of a nozzle record, only are offset the position of a nozzle respectively.That is, the line of 448 nozzles is arranged, be 16 sections and be piled up at each section.In addition, Rendering Process pattern 101 is logger tasks of 50%, and its size is 7168 * 512 pixels.In addition, possesses the mark 102 that is used to obtain with the nozzle correspondence.
Scanner with Optical Resolution 1200dpi reads this pattern, and carrying out not, injection nozzle detects and CONCENTRATION DISTRIBUTION mensuration.Below describing concrete not injection nozzle detects and the CONCENTRATION DISTRIBUTION assay method.
102 mark is to be provided with for the specific nozzle number, every 512 nozzles 14 marks is arranged.The view data that reads in scanner at first, is divided into every kind of color, is transformed into the gray level of reflection color depth.Data by this gray level read mark position, in order to be transformed to the data of paying with the nozzle location correspondence, to carry out suitable rotation, enlarge, dwindle processing, obtain the pixel correspondence suitable with 600dpi.
Detecting of injection nozzle not after having carried out suitable rotation as described above, having enlarged, dwindle processing, utilizes 100 not injection nozzle check pattern to carry out.Each section to this pattern cuts the part suitable with 7168 * 50 pixels, and then, in 1 pixel of original position as judging part.If the concentration of this part is identical substantially concentration with non-recorded part, then is judged as corresponding nozzle and does not spray.Thereby, be offset big nozzle and in this processing, be judged as not injection nozzle.
On the other hand, the Rendering Process information of each nozzle, decision as described below.
At first, calculate each nozzle CONCENTRATION DISTRIBUTION.The method is isolated the suitable part of middle body 7168 * 400 pixels with the Rendering Process pattern 101 of 50% task, and average each nozzle 400 pixel portion are as CONCENTRATION DISTRIBUTION.
If establishing the color of record head is c, the concentration of the nozzle i of this printhead is dens[c] [i], all the mean concentration of nozzles is ave[c], then these Rendering Process data she[c] [i] be set to:
she[c][i]＝(dens[c][i]-ave[c])/ave[c]
That is, this value representation, each nozzle record concentration of mean concentration is how relatively.And then, the mean concentration ave[c of Shi Yonging here], it is desirable to remove this part averaging processing having under the situation of injection nozzle not.Fig. 3 represents its result's a part (128 pixel portion).The part of (A) expression is among the figure, detects with above-mentioned not spraying and handles detected not injection nozzle part.Not injection nozzle information that these are new and Rendering Process information are preserved again in 23 print head information storage part inside.
And then, in the present embodiment, be directly to carry out aforementioned calculation, the concentration data of each nozzle that in scanner, reads as the Rendering Process data, but after also can carrying out suitable processing, make the Rendering Process data to the CONCENTRATION DISTRIBUTION that in above-mentioned scanner, reads.
Also have, in heterochromatic correction, become the color that should revise object and the color of appending that is used to revise between relation, the relation of data volume from each color and the brightness of this moment derives.
Fig. 4 represents the data volume in each color in the present embodiment and the relation of the brightness of this moment.According to this relation, set the color data amount of revising, the brightness of brightness in the data volume of the feasible object color that should revise and the color of appending that is used to revise equates.The result as shown in Figure 5.
And then, very high for yellow in addition for black in addition for the black correction of cyan magenta in the present embodiment because of the brightness of yellow self with the processing black correction of cyan magenta yellow, need not heterochromaticly revise.Its result is kept at 24 data table stores portion.
On one side with reference to above-mentioned 23 the data print head information storage part and the value of 24 table storage parts, in 2 correcting process portion carry out correcting process on one side, and with reference to the flow process of Fig. 6 this correcting process is described on one side on one side.At this, the view data after sequential processes is handled in 1 colour switching portion handling part line by line.Delegation, corresponding with the width of record head, can simply obtain the correspondence of the nozzle of the view data imported and this view data of physical record.Secondly, by from the nozzle information that 22 data store accesses, retrieve the nozzle that it does not spray.If, when injection nozzle is arranged not, to the corresponding pixel of injection nozzle not, carry out not injection nozzle correction of leading portion.This correction is carried out with the following method.For example, number be i at the nozzle of injection nozzle not, when its color is c, the pixel data corresponding with this nozzle is made as data[c] [i].Half data[c[of this data volume] i]/2 be distributed in the nozzle of both sides, its result is when surpassing setting, as the data over_d[c of reference in the heterochromatic correction portion of back segment] [i], and temporary transient the preservation.And then, in the present embodiment,, be arranged to as writing down about the value of regulation, promptly as the multi-value data of record symmetry be the maximum that obtains (in the present embodiment, 255:8bit).
After the injection nozzle correcting process finishes, carry out the correction of leading portion Rendering Process at this leading portion.This processing is according to the nozzle Rendering Process data she[c that becomes object] [i], carry out linearity correction merely.At this moment proportionality coefficient α and correction result data ' [c] [i] can represent with following formula.
α＝(1?she[c][i])
data’[c][i]＝α·data[c][i]
＝data[c][i]she[c][i]×data[c][i]
Such correction result when surpassing setting, is arranged to the data over_[c as reference in the heterochromatic correction of back segment] [i], and temporary transient the preservation.And then, at this, for distinguish revise before and revise after, be labeled as data[c] [i], data ' [c] [i], and in the processing of reality, though especially difference can not yet.
So after the same colour correction of leading portion finishes, carry out the heterochromatic correction of back segment.This heterochromatic correction is for the peaked amount over_[c that may write down that surpassed that calculates in leading portion is handled] [i], the heterochromatic compensation meter according to being kept at 24 table storage parts adds heterochromatic processing.In the present embodiment, cyan shown in Figure 5, magenta are used heterochromatic compensation meter C_k[x with the black correction], M_k[x], and black used to handle the heterochromatic compensation meter K_c[x of black correction], K_m[x], K_y[x].
So, after the heterochromatic compensation deals of carrying out homochromy compensation deals of leading portion and back segment, in 4 image processing part, carry out 2 values and handle.This 2 value method in the present embodiment, utilizes general error-diffusion method to carry out.The data bitmap that obtains is like this delivered to 4 driving device of printer head, the output correction image.
The image that so obtains is good, and promptly the lines of spout part are not obvious yet, and in addition, the inhomogeneous grade of lines reduces significantly.
As described above, if employing the present invention, when then the data through revising surpass setting when printing a Rendering Process correction and do not spray compensation, for example when surpassing the maximum that can write down, because it is corresponding above the heterochromatic correction of its peaked data volume, thereby each page writing speed is descended, thereby carry out various corrections effectively.In addition, its result also has the yield rate of the operable in fact printhead of raising.
Claims (6)
1, a kind of image correcting method, it is to have disposed the record head that sprays a plurality of nozzles of ink in use, the image correcting method by in the ink-jet recording apparatus that sprays the ink-mist recording image on recording medium comprises,
With reference to the correction step of the even relevant recording characteristic information correction image of the not injection nozzle of employed record head and record density unevenness,
It is characterized in that: the step of above-mentioned correction image is made up of following steps: the same colour correction step of using the record head same with becoming the record head of revising object to revise; Use heterochromatic correction step that the record head different with the correction object revise and
Above-mentioned heterochromatic correction step, when surpassing setting with the revised data of colour correction step, with the corresponding different color correct of its amount that surpasses.
2, the described method of claim 1 is characterized in that:
Above-mentioned with the colour correction step, by the homochromy not injection nozzle correction step that injection nozzle is not revised and to the homochromy Rendering Process correction step that density unevenness carries out form and
The step of homochromy not injection nozzle correction, distribute the data that add corresponding with it pixel surpassing in the scope of value of afore mentioned rules with the data of nozzle arrangement direction neighboring pixels, not distributing and remaining data volume as the object pixel above the data processing.
3, the described method of claim 1 is characterized in that:
Above-mentioned step with colour correction, by the homochromy not injection nozzle correction step that injection nozzle is not revised and to the homochromy Rendering Process correction step that density unevenness carries out form and
The step of homochromy Rendering Process correction serves as the view data of the corresponding pixel of basis increase and decrease with the information of the recording characteristic of predefined each nozzle, and handle the part that surpasses the afore mentioned rules value this moment as the data that surpass of object pixel.
4, the described method of claim 1 is characterized in that:
The step of above-mentioned heterochromatic correction, be for surpassing of the pixel that becomes object data based predefined heterochromatic compensation meter add different color data step and
Above-mentioned heterochromatic compensation meter is arranged to, and the color of the data volume correction of the color that becomes object and the brightness of its data volume are equated.
5, the described method of claim 1 is characterized in that:
The step of above-mentioned heterochromatic correction, be for surpassing of the pixel that becomes object data based predefined heterochromatic compensation meter add different color data step and
Above-mentioned heterochromatic compensation meter is arranged to, become object color data volume and to the aberration of the color data amount of its correction for minimum.
6, the described method of claim 1 is characterized in that:
The value of afore mentioned rules is the maximum of the data that can write down.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP340613/2001 | 2001-11-06 | ||
| JP2001340613A JP4035310B2 (en) | 2001-11-06 | 2001-11-06 | Image correction method in ink jet recording |
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| CN1417035A CN1417035A (en) | 2003-05-14 |
| CN1212936C true CN1212936C (en) | 2005-08-03 |
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| CNB021470715A Expired - Fee Related CN1212936C (en) | 2001-11-06 | 2002-10-29 | Image correcting method for ink jef record mode |
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|---|---|
| US (1) | US6702426B2 (en) |
| EP (1) | EP1310373B1 (en) |
| JP (1) | JP4035310B2 (en) |
| KR (1) | KR100501858B1 (en) |
| CN (1) | CN1212936C (en) |
| AT (1) | ATE265933T1 (en) |
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| JP4074414B2 (en) * | 1999-02-10 | 2008-04-09 | セイコーエプソン株式会社 | Adjusting the recording position misalignment during bidirectional printing where the correction value is changed between monochrome printing and color printing |
| JP2001094743A (en) * | 1999-09-24 | 2001-04-06 | Fuji Photo Film Co Ltd | Shading correction data management method and image reader |
| JP2001121793A (en) * | 1999-10-29 | 2001-05-08 | Canon Inc | Image processing apparatus and recording medium having image processing control program thereon |
| JP4681751B2 (en) * | 2000-05-01 | 2011-05-11 | キヤノン株式会社 | Recording apparatus and recording method |
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| US6702426B2 (en) | 2004-03-09 |
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